新乡市近郊农村生活饮用水水质调查分析

Investigation of hygienic quality of drinking water in Suburban countryside of Xinxiang city

目的 了解新乡市近郊农村生活饮用水卫生状况 ,为水质监测提供依据。方法 按照常规方法进行 10 0个水源采样 ,以《生活饮用水标准检验方法》GB5 75 0 - 85对所采集的水样进行检测 ,检测项目有物理学指标、化学性指标以及细菌学指标。结果 所有水样感观指标均达到国家卫生标准 ,其它指标除 pH值、硝酸盐氮合格率在 90 %以上外 ,其余指标合格率均较低 ,其中总硬度、氨氮及挥发酚的合格率分别为 5 3 %、5 2 %和 5 2 %。丰水期与枯水期重要污染指标有显著性差别 (P <0 .0 5 )。结论 新乡市近郊农村生活饮用水已经受到不同程度的污染 。

Objective In order to find out the hygienic quality of dinking water in suburban countryside of Xinxiang and to provide basis for the surveillance of hygienic quality of drinking water.Methods The water samples from 100 sources of water were took with th routine ways. The hygienic quality of water samples, including physical, chemical and bacteriological indexes etc, were surveyed according to 'Standard Ways of Surveillance for Dinking Water' (GB5750-85).Results All of sensory indexes reached the sanitary standard. Other indexes that were up standard were lower besides the yield of the pH value and nitric acid nitrogen were beyond 90%.The yield of total hardness, amino-nittrogen and volatile phenole were 53%,52% and 52% respectively.The important pollution items have significance difference between wet season and dry season(P<0.05).Conclusion Drinking water in suburban countryside of Xinxiang was polluted and the main pollutions were bacteria and organic matter.